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A kind of copper-doped poly-m-phenylenediamine nanoparticles and its synthesis and application method

A technology of poly-m-phenylenediamine and nanoparticles, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of unfavorable industrialization development, complicated preparation methods, and high cost. Achieve excellent adsorption performance, simple operation, and short equilibration time

Active Publication Date: 2017-05-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But in general, the preparation methods of these materials are relatively complicated, often involving methods such as impregnation, drying, and even calcination. More importantly, the raw materials of rare earths and metal oxides used are mostly expensive, which is not conducive to the development of industrialization.

Method used

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  • A kind of copper-doped poly-m-phenylenediamine nanoparticles and its synthesis and application method
  • A kind of copper-doped poly-m-phenylenediamine nanoparticles and its synthesis and application method
  • A kind of copper-doped poly-m-phenylenediamine nanoparticles and its synthesis and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Accurately weigh 3.0 g of m-phenylenediamine, and then add it into a 250 mL round bottom flask. Add 100mL of distilled water and stir until completely dissolved, keep the temperature of the monomer solution in a water bath to 30°C; accurately weigh 4.8g of copper chloride dihydrate and completely dissolve it in 20mL of distilled water, keep the temperature of the copper ion solution in a water bath to 30°C, and quickly Added to the m-phenylenediamine solution for reaction, the solution changed from clear and colorless to dark green rapidly. Then, a ventilation tube with a ventilation rate of 40 L / min was inserted into the reaction system to initiate cyclic oxidative polymerization. The above reaction was continued at 30°C for 24 hours. The reaction system solution turned from dark green to black rapidly, accompanied by a large number of solid particles on the reactor wall. After the reaction, remove the reaction solution by suction filtration with a G-5 sand core funn...

Embodiment 2、3 and 4

[0032] Repeat Example 1, changing the amount of copper chloride dihydrate to 2.4g, 1.2g and 0.64g. The obtained product is a black solid powder, all of which are nano-scale poly-m-phenylenediamine. The corresponding conversions were 99.9% and 98.8% and 61.7%, respectively, with TOC concentrations of 1.93 mg, 24.5 mg and 765.6 mg, respectively.

Embodiment 5、6

[0034] Repeat Example 1, changing the reaction duration to 12 hours and 6 hours. The obtained product is a black solid powder, all of which are nano-scale poly-m-phenylenediamine. The corresponding conversion rates were as high as 98.8% and 93.0%, respectively, and the TOC concentrations were 24 mg and 120 mg, respectively.

[0035] figure 1 The data show that the surface of the products of Examples 1-6 is mainly composed of C, N, O and Cu elements.

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Abstract

The invention discloses a copper doped poly(m-phenylenediamine) nanoparticle and a synthesis and application method thereof, belonging to the research areas of preparation of poly(m-phenylenediamine) nanoparticles and water treatment. The invention is based on an air oxidation system, and copper salt is introduced into the reaction system to provide activation of copper ions, thus realizing high-efficiency clean synthesis of the novel copper doped poly(m-phenylenediamine) nanoparticle; and the monomer conversion rate is up to approximately 100%. The obtained copper doped poly(m-phenylenediamine) particle has excellent adsorbability on As (VI) in a water body. The poly(m-phenylenediamine) adsorbent preparation process provided by the invention is simple and low in cost, causes no secondary pollution and has wide industrialization prospects.

Description

technical field [0001] The invention relates to a high-efficiency and clean synthesis method of a copper-doped poly-m-phenylenediamine adsorbent, a synthesized product and an application method thereof. Background technique [0002] Arsenic pollution seriously endangers human health and damages the ecological environment (Environmental science & technology 2002, 36(24), 5455-5461; Science 2008, 321(5886), 184-185). my country's Xinjiang, Inner Mongolia, Gansu, Henan and Shandong provinces all have potential high-risk areas, and arsenic pollution control is imminent. [0003] Arsenic removal methods mainly include coagulation precipitation, adsorption, ion exchange, electrocoagulation, membrane technology, biotechnology, etc. Generally speaking, the adsorption method has a great research prospect due to its advantages of simple operation, low cost, high biocompatibility, less likely to cause secondary pollution, and high removal efficiency (J. Hazard. Mater., 2007, 142 (1), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K3/16C08K3/30C08K3/28B01J20/26B01J20/30C02F1/28C02F1/58
Inventor 王海鹰柴立元戴硕彭兵张理源王婷杨志辉唐崇俭杨卫春
Owner CENT SOUTH UNIV